Average annual temperature is 14.9 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -13.2 °C
Number of sunny days: 149 days
Number of rainy days: 211 days
Number of snow days: 5 days
Look at detailed online map of Kamiisawa
* Weather data for Kamiisawa Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 15.3 | 14.9 | 21.8 | 24.1 | 27.6 | 29.4 | 33.5 | 35.6 | 33.2 | 26.1 | 24.4 | 19.5 |
| Average daytime temperature (°C) | 7.4 | 8.5 | 15.2 | 17.8 | 21.7 | 25.2 | 30.1 | 31.9 | 29.2 | 20.9 | 15.9 | 10.6 |
| Average temperature (°C) | 2.5 | 3.9 | 9.8 | 12.8 | 16.9 | 21.1 | 25.9 | 27.3 | 24.8 | 16.0 | 11.2 | 6.2 |
| Average night temperature (°C) | -1.7 | -0.2 | 5.0 | 8.6 | 13.0 | 17.6 | 22.4 | 24.0 | 21.6 | 11.8 | 7.5 | 2.4 |
| Absolute minimum temperature (°C) | -13.2 | -4.7 | -2.4 | 2.5 | 6.3 | 11.7 | 18.4 | 22.4 | 17.5 | 6.6 | -0.3 | -4.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.7 | 6.3 | 8.4 | 7.7 | 9.1 | 6.8 | 9.6 | 10.1 | 9.6 | 8.9 | 7.4 | 6.9 |
| Precipitation (mm) | 45 | 37 | 105 | 183 | 262 | 287 | 106 | 206 | 64 | 31 | 111 | 44 |
| Sunny days | 11 | 13 | 16 | 16 | 15 | 7 | 9 | 4 | 8 | 15 | 17 | 18 |
| Rainy days | 17 | 13 | 15 | 14 | 16 | 23 | 22 | 27 | 22 | 16 | 13 | 13 |
| Snow days | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Kamiisawa is at